Muff



FIG. 1 is a perspective view of a muff showing our new design;

FIG. 2 is a rear elevational view;

FIG. 3 is an end elevational view thereof, the opposite end is a mirrorimage;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

The ornamental design for a muff, as shown and described.